Hi

planning on 200shots this summer got plate system whith standalone fuel cell

C5 vette T56 404ci 11.4:1 CP
cam 248/254 615/622 114lsa

few things i wante to know to be 100%

pump gas 97pon oct (is it ok?)
NGK 7 irrindium plugs (Are they the right one, what gap?) or do i need colder
Timing - 8° to start whith (right?) or should i retard it more (using HPT)

i have also NOS launcher programmer to progress the nitrous



thanks
Baezi

 

I'd pull 12 degrees and read the plugs from there. The 2 degree for every 50shot is a crock. I'm on a 150 and she needs 9 degrees pulled. I have a Z06 but same basic motor. Start with a safer tune and adjust from there. Especially with that CAM/

 

I would run a NGK Br8ef gapped around .33 You want to stick with a non-projected tip plug, the iridium plugs aren't the best for spray. Also the #8 plug I suggested will give you a little more room fro error.

 

thanks for the infos...... i'll looke into that i already have ngk iridium 7 plugs thought they were the right ones

what plugs are you using
and what timing exactly are you running on 150shots



baezi

 

BR7EF plugs gapped at .33

timing is 15 - 17 total timing depending on the RPM and MAP.

 

ok i see

what compression are you running on, and on what kind of fuel

thanks
Baezi

 

I would run a 8 plug and pull a little more timing

 

Put a #8 ngk br8ef in the car and c-16 in the standalone and start with 12 degrees of timing pulled make a pass and check the plugs.

 

Start with a 100-shot. Work your way up to 200 carefully.

 

I'm new in nitrous and i've read every where to check the plugs , but i haven't got it yet what i'm looking at , how should the plug looke like and then again not looke like ??

exactly what i had in mind

i have 50-100-150-200 jets and i´m gona work my way up

thanks for all answers

Baezi

 

Plugs the tip were the timing mark should be should be slightly before the bend,color of the tip golden brownish thats were u want it to be. the porcealean should be white any color on that means your running rich.Any signs of detonation will be a speckled color on the porcealan,or melted tip.I thoght you were spraying the car with the smaller shots already,but like said take your time and work your way up it will be worth the patience.Your car should put up some good #'s

 

thanks man

i´m new in nitrous, i rebuilt my motor this winter set up for nitrous... but i haven´t sprayed before, and the plan was always to start whith 100 and work my way up, the motor is built for easely 250 shots

hopefully i´ll get the chance to try 200 shots out this summer

i just ordered NGK BR8´s

thanks for all comments

Baezi